Scott,
Thanks for the ideas.

But I guess that shows the importance of the quality of sounds and styles in top arrangers. This is will attract the musicians above everything.
Look at Tyros: very few features compared to the rest; a glorified PSR keyboard. But simply sells as high as the other arrangers simply due to its superior sounds and styles.
I guess this is a lesson to Casio. They are managing to get cheap and rich instruments. If they can only stop for minute and think about beating yamaha in sounds and styles.